关于加速度瞬心法

对刚体的平面运动的教学,必涉及“瞬心法”,而现行教材均只论速度问题.对是否存在加速度瞬心?若存在,如何找加速度瞬心? 瞬心法对加速度问题是否也成立?速度瞬心和加速度瞬心是否重合等问题都没有作进一步地讨论,从而使学者易模糊混淆,教者总有解释不透之感.本文对有关问题作分析讨论,并给出明确结论.

About the Method of Instantaneous Center for Acceleration

To have to be involved "the method of instantaneous center", for the teaching at motion of plane of rigid body. Only also discussing the problem at velocity on existing teaching material. Is it existed, how to find instantaneous center for acceleration? Is it held good for the method of instantaneous center to the problem of acceleration? Is it registration of instantaneous center for velocity with instantaneous center for acceleration, as thus problems all have not made discussing to move further-ahead. So then make students blurred and disordered easily, and make teacher always had sense that explaining not cleared. In this study, We analysed and discussed about to concerned problems, and gave cleared conclusions.